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Altera_Forum
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18 years ago

Cyclone series MSEL settings

How do I set my MSEL pins for Cyclone series devices if I plan on only using JTAG to configure my device?

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    18 years ago

    If your design only uses JTAG configuration, you should connect the MSEL0 pin to VCC. This will allow you the option of using the dedicated configuration pins ASDO and nCSO as user I/O pins. Do not leave any of the MSEL pins floating. Connect all MSEL pins to eigther GND or VCC. For JTAG to work MSEL pins can be any setting just not floating.

  • Altera_Forum's avatar
    Altera_Forum
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    18 years ago

    JTAG will work for any MSEL settings. Just don't leave MSEL pins floating.

  • Altera_Forum's avatar
    Altera_Forum
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    18 years ago

    Don't ever leave any dedicated inputs floating. Very bad and unusual things can happen. The .pin file that gets generated in your project is a good place for advice on what connections you should make.